Modified bismaleimide prepolymer, resin composition and use of resin composition

Abstract

The invention provides a modified bismaleimide prepolymer, prepared by a reaction of a bismaleimide compound, a double bond-containing organic silicone resin and a hydrocarbon resin. A mass ratio of the bismaleimide compound to the double bond-containing organic silicone resin to the hydrocarbon resin is 100:(3-40):(5-50). According to the invention, a silicon-oxygen bond and a carbon-hydrogen bond are introduced into the bismaleimide compound, and the mass ratio of the bismaleimide compound to the double bond-containing organic silicone resin to the hydrocarbon resin is controlled, thereby improving the polymerization processability and the toughness and dielectric properties of the bismaleimide compound curing system.

What is claimed is: 
     
         1 . A modified bismaleimide prepolymer, prepared by a reaction of a bismaleimide compound, a double bond-containing organic silicone resin and a hydrocarbon resin, wherein a mass ratio of the bismaleimide compound to the double bond-containing organic silicone resin to the hydrocarbon resin is 100:(3-40):(5-50). 
     
     
         2 . The modified bismaleimide prepolymer according to  claim 1 , wherein a ratio of a sum of double bond equivalents of the double bond-containing organic silicone resin and the hydrocarbon resin to a double bond equivalent of the bismaleimide compound is 1:(5-0.8). 
     
     
         3 . The modified bismaleimide prepolymer according to  claim 1 , prepared by the following reactions:
 reacting the bismaleimide compound with the double bond-containing organic silicone resin at 50-90° C. for 30-120 min to obtain a pre-reactant; and   adding the hydrocarbon resin to the pre-reactant, and carrying out a reaction at 90-130° C. for 30-150 min to obtain the modified bismaleimide prepolymer.   
     
     
         4 . The modified bismaleimide prepolymer according to  claim 3 , wherein 0.1-10 parts by weight of at least one of aminophenol, carboxylic acid or carboxylic anhydride is added during the reaction process of the bismaleimide compound, the double bond-containing organic silicone resin and the hydrocarbon resin. 
     
     
         5 . The modified bismaleimide prepolymer according to  claim 3 , wherein the obtained modified bismaleimide prepolymer contains reactive double bonds. 
     
     
         6 . A resin composition, comprising the following ingredients in parts by weight:
 (a) modified bismaleimide prepolymer: 10-80 parts; and   (b) maleimide compound or derivatives thereof: 10-80 parts;   wherein the modified bismaleimide prepolymer is the modified bismaleimide prepolymer according to  claim 1 .   
     
     
         7 . The resin composition according to  claim 6 , further comprising 3-50 parts by weight of elastomer, the elastomer being at least one of a styrene elastomer, a methacrylate elastomer and an organic silicone elastomer. 
     
     
         8 . The resin composition according to  claim 6 , wherein the resin composition further comprises 5-50 parts by weight of flame retardant. 
     
     
         9 . The resin composition according to  claim 8 , wherein the flame retardant is selected from a bromine flame retardant, a phosphorus flame retardant, a nitrogen flame retardant, an organic silicone flame retardant and an organic metal salt flame retardant;
 the bromine flame retardant is selected from decabromodiphenyl ether, decabromodiphenyl ethane, brominated styrene or tetrabromophthalamide;   the phosphorus flame retardant is selected from inorganic phosphorus, phosphate ester, phosphoric acid, hypophosphorous acid, phosphorus oxide, 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO), 10-(2,5-dihydroxyphenyl)-9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO-HQ),   
       
         
           
           
               
               
           
         
          (m is an integer of 1 to 5), 
       
       
         
           
           
               
               
           
         
          10-phenyl-9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, tris(2,6-dimethylphenyl)phosphine, phosphazene and modified phosphazene; 
         the nitrogen flame retardant is selected from a triazine compound, a cyanuric acid compound, an isocyanic acid compound and phenothiazine; 
         the organic silicone flame retardant is selected from organic silicone oil, organic silicone rubber and organic silicone resin; and 
         the organic metal flame retardant is selected from ferrocene, an acetylacetone metal complex and an organic metal carbonyl compound. 
       
     
     
         10 . The resin composition according to  claim 6 , further comprising a silane coupling agent and a dispersant, a weight ratio of the silane coupling agent to the dispersant being (2-10): 1. 
     
     
         11 . The resin composition according to  claim 10 , wherein the silane coupling agent is an epoxy silane coupling agent, and the dispersant is a phosphate ester dispersant and/or a modified polyurethane dispersant. 
     
     
         12 . Use of the resin composition according to  claim 6  in a semi-cured sheet, a laminate, an insulating film, an insulating board, a copper clad laminate, a circuit substrate and an electronic device.